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---
name: fea
description: Issue-driven feature planning workflow via Gitea. Reads issue as prompt, discusses requirements via issue comments, publishes implementation plan to wiki. Triggered with /fea owner/repo#number.
user-invocable: true
argument-hint: <owner/repo#issue-number>
---
# Issue-Driven Feature Planning Skill
You orchestrate a multi-phase feature planning workflow using Gitea issues and wiki. The argument `$ARGUMENTS` is in the format `owner/repo#number` (e.g. `pushok/mpns#12`).
Read `.claude/skills/fea/referencies/gitea-dto.md` before every invocation — it defines which fields to extract from Gitea responses and how to classify comments.
## Argument Parsing
Parse `$ARGUMENTS` into three variables:
- `owner` — everything before `/`
- `repo` — between `/` and `#`
- `issue_number` — after `#` (integer)
If parsing fails, tell the user: "Expected format: `/fea owner/repo#12`"
## Context Loading
Every invocation starts by loading context:
1. **Fetch issue** via `mcp__gitea__get_issue_by_index` with `owner`, `repo`, `index=issue_number`
2. **Fetch comments** via `mcp__gitea__get_issue_comments_by_index` with `owner`, `repo`, `index=issue_number`
3. **Extract fields** per `.referencies/gitea-dto.md` — discard everything else
4. **Classify comments** into bot vs user per `.referencies/gitea-dto.md` rules
The issue `title` + `body` is the feature prompt (replaces the old `prompt.md`).
## Phase Detection
Detect the current phase from the comment history:
1. **No bot comments at all** → Phase 1: Explore & Ask
2. **Latest bot comment has `### Questions`, no user comment posted after it** → Phase 2: Waiting for answers
3. **Latest bot comment has `### Questions`, user comment exists after it** → Phase 3: Process answers
4. **Latest bot comment has `<!-- status:ready -->`, no plan-published marker** → Phase 4: Generate plan
5. **Bot comment with `# Implementation Plan` exists** → Done: tell user the plan is already published, show the wiki link
## Phase 1: Explore & Ask
Issue understanding phase described at:
- `references/phases/phase1-understanding.md`
## Phase 2: Waiting for Answers
The latest bot comment has questions but no user reply after it. Tell the user:
"Waiting for your answers on the issue. Reply to the questions comment and re-run `/fea $ARGUMENTS`."
## Phase 3: Process Answers
Conversation reconstruction analyzing and responce phase described at:
- `references/phases/phase3-conversation.md`
## Phase 4: Generate Plan
Feature planning:
- `references/phases/phase4-planning.md`
## Important Rules
- ALWAYS read `.referencies/gitea-dto.md` and extract only listed fields — do not pass raw Gitea JSON to agents
- Bot comments MUST start with `<!-- mpns-feature-bot -->` on the very first line
- Session numbering: count existing bot Q&A comments to determine next session number
- Questions should be thoughtful and specific — 37 per session
- Use Russian where the issue is written in Russian
- Each session should make meaningful progress toward clarity
- Wiki page content must be base64-encoded for `create_wiki_page` / `update_wiki_page`
- Never post duplicate bot comments — check existing comments before posting
- When posting markdown in comments, ensure code blocks and formatting render correctly on Gitea

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# Gitea DTO Reference
Raw Gitea API responses are large. When processing responses in this skill, extract **only** the fields listed below. Discard everything else before passing data to agents or storing in context.
## Issue (`get_issue_by_index`)
```
{
"number": int, // issue index
"title": string, // issue title
"body": string, // issue description (markdown)
"state": string, // "open" | "closed"
"labels": [{ "name": string }],
"user": { "login": string },
"created_at": string,
"html_url": string
}
```
**Discard**: `id`, `url`, `original_author`, `original_author_id`, `ref`, `milestone`, `assignees`, `is_locked`, `pull_request`, `repository`, full `user` object (keep only `login`), full `labels` objects (keep only `name`).
## Comment (`get_issue_comments_by_index`)
Response is an array. Per comment extract:
```
{
"id": int, // comment ID (needed for edit_issue_comment)
"body": string, // comment body (markdown)
"user": { "login": string },
"created_at": string
}
```
**Discard**: `html_url`, `pull_request_url`, `issue_url`, `original_author`, `original_author_id`, `assets`, `updated_at`, full `user` object (keep only `login`).
## Comment classification
After extracting comment fields, classify each comment:
- **Bot comment**: `body` starts with `<!-- mpns-feature-bot -->`
- **User comment**: everything else
Bot comments are further classified by phase marker:
- Contains `### Questions` → Q&A session comment
- Contains `<!-- status:ready -->` → ready-for-planning marker
- Contains `## Implementation Plan` → plan-published marker
## Wiki page (`get_wiki_page`)
```
{
"title": string,
"content": string, // base64-encoded page content
"html_url": string
}
```
**Discard**: `sub_url`, `commit_count`, `sidebar`, `footer`, `last_commit`.
## Tool parameter reference
### Read operations
| Tool | Required params |
|------|----------------|
| `get_issue_by_index` | `owner`, `repo`, `index` (int) |
| `get_issue_comments_by_index` | `owner`, `repo`, `index` (int) |
| `get_wiki_page` | `owner`, `repo`, `pageName` (string) |
| `list_wiki_pages` | `owner`, `repo` |
### Write operations
| Tool | Required params | Notes |
|------|----------------|-------|
| `create_issue_comment` | `owner`, `repo`, `index` (int), `body` (string) | Body is markdown |
| `edit_issue_comment` | `owner`, `repo`, `commentID` (int), `body` (string) | |
| `create_wiki_page` | `owner`, `repo`, `title` (string), `content_base64` (string) | Content must be base64-encoded |
| `update_wiki_page` | `owner`, `repo`, `pageName` (string), `content_base64` (string) | Optional: `title`, `message` |
| `edit_issue` | `owner`, `repo`, `index` (int) | Optional: `title`, `body`, `state`, `assignees`, `milestone` |

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# Phase 1
## Step 1 — Understand the issue
Read the issue title and body. This is the user's raw feature request.
## Step 2 — Explore the codebase
Use the Agent tool with `model: "haiku"` and `subagent_type: "Explore"` to scan the codebase for context relevant to the feature. Ask the agent to:
- Find all files, types, interfaces, and functions related to the feature's domain
- Identify architectural layers that will be affected
- Note existing patterns and conventions
- Return a structured summary
## Step 3 — Post questions as issue comment
Use `mcp__gitea__create_issue_comment` to post a comment on the issue. The comment body MUST follow this exact format:
```markdown
<!-- mpns-feature-bot -->
# Feature Analysis — Session 01
## Context
<Summary of codebase findings key files, patterns, existing structures relevant to this feature>
---
## Questions
1. <question>
2. <question>
...
---
*Reply with your answers, then re-run `/fea $ARGUMENTS`.*
```
Rules for questions:
- 37 questions per session
- Ask about: ambiguities, domain model decisions, behavioral edge cases, integration points
- Be specific — avoid generic "tell me more" questions
- Use Russian if the issue body is in Russian
Tell the user: "I've posted questions as a comment on the issue. Answer there and re-run `/fea $ARGUMENTS`."

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# Phase 3
## Step 1 — Build conversation history
Reconstruct the full Q&A history from comments:
- Issue body = original prompt
- Bot comments with `## Questions` = sessions (ordered by `created_at`)
- User comments after each bot Q&A comment = answers for that session
## Step 2 — Analyze
Use the Agent tool with `model: "opus"` and `subagent_type: "general-purpose"` to analyze:
- The user's latest answers
- The full conversation history (all sessions)
- The current codebase context
- Whether the feature is fully understood or needs more clarification
The agent should return:
- A feature description summary (what was clarified, what remains unclear)
- Either `CLEAR` (no more questions) or a list of follow-up questions
## Step 3 — Post result
**If follow-up questions needed** — post a new session comment:
```markdown
<!-- mpns-feature-bot -->
# Feature Analysis — Session NN
## Context
<Brief recap of what was clarified in the last round>
---
## Questions
1. <follow-up question>
2. <follow-up question>
...
---
*Reply with your answers, then re-run `/fea $ARGUMENTS`.*
```
Increment the session number based on how many bot Q&A comments already exist.
Tell the user to answer and re-run.
**If everything is CLEAR** — post a ready-for-planning comment:
```markdown
<!-- mpns-feature-bot -->
<!-- status:ready -->
# Feature Description
**Status**: Ready for planning
## Summary
<1-2 sentence summary>
## Behavior
<Bulleted list of expected behaviors>
## Domain Changes
<Expected domain model changes>
## Affected Layers
<Architectural layers and key files>
---
*Feature is fully understood. Re-run `/fea $ARGUMENTS` to generate the implementation plan.*
```
Tell the user: "Feature description is complete. Review the comment on the issue. When ready, re-run `/fea $ARGUMENTS` to generate the plan."

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# Phase 4
## Step 1 — Deep codebase analysis
Use the Agent tool with `model: "haiku"` and `subagent_type: "Explore"` with thoroughness "very thorough" to:
- Map every file that will be created or modified
- Identify dependency order between changes
- Find existing test patterns
- Note migration requirements
## Step 2 — Create plan
Use the Agent tool with `model: "opus"` and `subagent_type: "general-purpose"` to design the implementation plan based on:
- The feature description from the `<!-- status:ready -->` comment
- Full Q&A history from all session comments
- Codebase exploration results
- The project's existing patterns (DDD layers, aggregate repos, hand-written SQL, Watermill messaging, etc.)
The plan must produce content for three wiki page types (see `templates/` for format):
### Feature page content
- Problem summary
- Design decisions
- Task dependency graph (ASCII)
- Tasks table with IDs and titles
### Sub-task pages content (one per task: T01, T02, ...)
- Description of what the task accomplishes
- Files created/modified
- Dependencies and parallel tasks
- Detailed changes with code sketches
## Step 3 — Publish wiki pages
Wiki page naming:
- **Feature page**: `feature-<issue_number>-<slug>` where `<slug>` is kebab-case issue title (max 40 chars)
- **Sub-task pages**: `feature-<issue_number>-<slug>-t<NN>` (e.g. `feature-12-user-auth-t01`)
For each page, use `mcp__gitea__create_wiki_page` with:
- `owner`, `repo`
- `title`: the page name
- `content_base64`: page content **base64-encoded**
- `message`: descriptive commit message
To base64-encode, use Bash: `echo -n '<content>' | base64 -w0`
If a page already exists (tool errors), use `mcp__gitea__update_wiki_page` instead with `pageName` set to the page name.
## Step 4 — Update README wiki page
Check if a `README` wiki page exists via `mcp__gitea__get_wiki_page` (`pageName: "README"`).
- If it does not exist, create it using the `templates/readme.md` format with the current feature as the first row.
- If it exists, decode its content, append a new row for this feature to the table, and update it.
Feature table row format:
```
| <issue_number> | [<title>](<issue_url>) | Planning | [Wiki](<feature_wiki_url>) |
```
## Step 5 — Post plan link as comment
Construct the wiki URL: `https://<GITEA_HOST>/<owner>/<repo>/wiki/<page-name>`
(GITEA_HOST is `git.marlerino-apps.io`)
Post a comment on the issue:
```markdown
<!-- mpns-feature-bot -->
# Implementation Plan
Published to wiki: [<feature-page-name>](<feature-wiki-url>)
## Tasks
- [ ] T01: [<task title>](<t01-wiki-url>)
- [ ] T02: [<task title>](<t02-wiki-url>)
...
```
Tell the user: "Implementation plan published to wiki. Link posted on the issue."

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# {{FEATURE_TITLE}}
> Issue: [#{{ISSUE_NUMBER}}]({{ISSUE_URL}})
## Problem
{{PROBLEM_SUMMARY}}
## Design Decisions
{{DESIGN_DECISIONS}}
## Task Dependency Graph
```
{{DEPENDENCY_GRAPH}}
```
## Tasks
| Task | Title | Status | Wiki |
|------|-------|--------|------|
{{TASKS_TABLE}}

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# Features
| # | Feature | Status | Wiki |
|---|---------|--------|------|
{{FEATURES_TABLE}}

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# {{TASK_ID}}: {{TASK_TITLE}}
> Feature: [{{FEATURE_PAGE}}]({{FEATURE_WIKI_URL}}) | Issue: [#{{ISSUE_NUMBER}}]({{ISSUE_URL}})
## Description
{{TASK_DESCRIPTION}}
## Files
| Action | Path |
|--------|------|
{{FILES_TABLE}}
## Dependencies
- **Blocked by**: {{BLOCKED_BY}}
- **Parallel with**: {{PARALLEL_WITH}}
## Changes
{{DETAILED_CHANGES}}